• 제목/요약/키워드: 고형화

검색결과 641건 처리시간 0.029초

Effect of Coagulating Nonsolvent on Impregnation of Inorganic Fluor in the PSF Membranes Prepared by Phase Inversion (상반전 폴리설폰 막에 무기 fluor의 함침에 있어 침지용 비용매가 미치는 영향)

  • 한명진;남석태
    • Membrane Journal
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    • 제11권2호
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    • pp.89-95
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    • 2001

  • Polysulfone membranes containing an inorganic fluor, cerium activated yttrium silicate (CA Y5), were prepared via the phase inversion technique. The casting solutions with the fluor' were solidified to result in a membrane by using two different nonsolvent coagulants, water and isopropanol. In the process, the fluor worked as a monitioring agent for investigating the characteristics of the phase inversiun process. On the initial contact with water as nonsolvent, the induction of rapid polymer collapse results.in the entrapment of the fluor in the formed membrane structure. Impregnated fluor is dispersed in the polymer structure rather than being enveloped by polymer molecules. In comparison, the fluor is localized in the cell-like structure of membrane, as the cast solution film is cuagulated by immersion into a isopropanol bath.

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